Footwear sole



FIG. 1 is a bottom plan view of a footwear sole showing my new design;

FIG. 2 is a side elevational view of the lateral side thereof;

FIG. 3 is a side elevational view of the medial side thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The top of the sole is plain. 

The ornamental design for a footwear sole, as shown and described. 